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Finding the Fourth Proportional to 9,291.92, 12,823.73 and 5,312.25

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Solution

The fourth proportional to 9,291.92, 12,823.73 and 5,312.25 is: 7,331.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,291.92 : 12,823.73 = 5,312.25 : x
  2. Step 2: Convert to fraction form
    9,291.92/12,823.73 = 5,312.25/x
  3. Step 3: Cross multiply
    9,291.92x = 12,823.73 × 5,312.25
  4. Step 4: Simplify right side
    9,291.92x = 68,122,859.69
  5. Step 5: Solve for x
    x = 68,122,859.69/9,291.92
  6. Step 6: Final answer
    x = 7,331.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.